While no new clues have surfaced on Mount Tamalpais during the massive search for a missing Menlo Park woman, authorities are investigating a tip discovered on another trail frequented by the 33-year-old software developer -- her social media trail.

A caller reported Sunday morning that Magdalena Glinkowski had made an update to her LinkedIn profile since she was last seen March 30, in a parking lot known as Bootjack near the Pantoll Campground, said Marin County sheriff's Lt. Doug Pittman.

The 5-foot-7, 120-pound woman was captured on video surveillance near where her car was later discovered, wearing a bright pink pullover top, light blue shorts and white and black running shoes.

The tip comes as the first potentially valid lead since the woman was last seen and is consistent with recent changes in her career history. According to Pittman, the woman has been unemployed for about two weeks.

"As we speak we are in communication with LinkedIn, who has been very cooperative, to confirm she has made a change to her profile," Pittman said. "We're aware that a lot of people track their activity on various social websites, and we're trying to determine if her recent activity could be a clue in the case."

More than 100 volunteers and eight search dogs from Marin, Alameda, Contra Costa, San Mateo and Santa Clara counties continued to search Mount Tamalpais on Sunday for a second day, and California Highway Patrol and Marin County sheriff's air patrol units kept searching by air, the sheriff's lieutenant said.

Advertisement

He added that with thousands of visitors in the area on a sunny weekend, search and rescue crews are redirecting their teams to areas with fewer eyes on the ground, like gorges and ravines far off the beaten path.

"We've handed out pamphlets to all the park visitors," Pittman said. "Mt. Tam is thousands of square acres and heavily brushed -- now, it really is just looking for the needle in the haystack."

The full-scale search for the missing software developer was launched after park rangers discovered her abandoned vehicle Friday, Pittman said. The woman had purchased a one-day ticket on March 30 to park the white, four-door car, which she rents continuously from a rental car company.

Investigators went on to discover that the woman renewed her car rental during the first week of every month, and that the company had been surprised when she failed to do so in April, Pittman said. The woman, who lives alone, had also left her landlord a note March 30, stating that she was going hiking, but never returned to the property.

Glinkowski was not reported missing to Menlo Park police until her car was found by the park rangers, five days after she was last seen in the Bootjack parking lot, Pittman said. Acquaintances of the woman identified her as a "recluse" who mostly kept to herself, saying she was not socially active outside of work.

In addition to the possible LinkedIn update, authorities found an assortment of unusual clues during a search of Glinkowski's home and car. She had surprisingly little computer equipment for a person continuously employed as a software developer.

During a search of Glinkowski's home, investigators were unable to locate a single desktop or laptop computer, Pittman said. They were also surprised to find that the woman had left all of her personal effects inside her parked vehicle, including her driver's license, credit cards and a smartphone equipped with few applications.

"Usually someone who is as immersed in the computer business as she was would have many things like that inside of their home," Pittman said. "It does appear she may have gotten laid off in the past couple weeks -- it's not unlikely for people to become a little despondent."

While authorities continue to investigate "every possibility," including that she may have left voluntarily, Pittman said officials are continuing to work under the assumption that she may be lost or hurt in the vast expanse of Mount Tamalpais State Park.

Heavy rains the night of March 30 left hiking trails precariously wet, and officials do not discount the notion that she may have slipped and fallen into heavy brush.

"Those trails get very muddy and slippery, and she could have gotten into trouble without even realizing it," Pittman said. "It's very possible that someone could be six to 10 feet off the trail and possibly not even be seen."

Anyone with information about the disappearance of Magdalena Glinkowski is urged to contact the Marin County Sheriff's Investigations Unit at 916-473-7265.